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Starts the sketch operation and caches the existing sketch. Call this before modifying the sketch.
[Visual Basic .NET] Public Sub Start ( _ ByVal editor As IEngineEditor _ )
[C#] public void Start ( IEngineEditor editor );
[C++]
HRESULT Start(
IEngineEditor* editor
);
[C++]
Parameters editor [in]
editor is a parameter of type IEngineEditor*
Modifications made to an edit sketch should be contained between calls to Start and Finish. Start caches the edit sketch's geometry in case the sketch operation is undone; when this occurs, the modified geometry is replaced by the cached geometry.